[1D] Use nonzero initial guess for FreeFlame mass flow rate

This helps avoids timestepping errors in the first timestep
Cantera · Mar 25, 2016 · a9293c3 · a9293c3
1 parent de8348e
commit a9293c3
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/interfaces/cython/cantera/onedim.py b/interfaces/cython/cantera/onedim.py
@@ -405,6 +405,10 @@ def set_initial_guess(self):
         u0 = self.inlet.mdot/self.gas.density
         T0 = self.inlet.T
 
+        if not self.inlet.mdot:
+            # nonzero initial guess increases likelihood of convergence
+            self.inlet.mdot = 1.0
+
         # get adiabatic flame temperature and composition
         self.gas.equilibrate('HP')
         Teq = self.gas.T